slump

Short definition from Wiktionary

Verb

1. 1
   To collapse heavily or helplessly.
2. 2
   To decline or fall off in activity or performance.
3. 3
   To slouch or droop.
4. 4
   To lump; to throw together messily.
5. 5
   To fall or sink suddenly through or in, when walking on a surface, as on thawing snow or ice, a bog, etc.
6. 6
   To cause to collapse; to hit hard; to render unconscious; to kill.

Noun

1. 1
   A heavy or helpless collapse; a slouching or drooping posture; a period of poor activity or performance, especially an extended period.
2. 2
   A heavy or helpless collapse; a slouching or drooping posture; a period of poor activity or performance, especially an extended period: A period when a person goes without the expected amount of sex or dating.
3. 3
   A measure of the fluidity of freshly mixed concrete, based on how much the concrete formed in a standard slump cone sags when the cone is removed.
4. 4
   A form of mass wasting in which a coherent mass of loosely consolidated materials or a rock layer moves a short distance down a slope.
5. 5
   A crater or depression (an area where the ground slumps) which forms as a result of such wasting. (A large crater is colloquially called a megaslump.)
6. 6
   A boggy place.
7. 7
   The noise made by anything falling into a hole, or into a soft, miry place.
8. 8
   The gross amount; the mass; the lump.
9. 9
   A cobbler-like dessert cooked on a stove.